The Most Probable Mechanism Function and Kinetic Parameters of Gibbsite Dissolution in NaOH

鲍丽; 张廷安; 刘燕; 豆志河; 吕国志; 王晓民; 马佳; 蒋孝丽

doi:10.1016/S1004-9541(10)60267-4

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The Most Probable Mechanism Function and Kinetic Parameters of Gibbsite Dissolution in NaOH

Updated：2026-01-06

- The Most Probable Mechanism Function and Kinetic Parameters of Gibbsite Dissolution in NaOH
- Chinese Journal of Chemical Engineering Vol. 18, Issue 4, Pages: 630-634(2010)
- Affiliations：
  
  Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education, School of Materials and Metallurgy, Northeastern University,Shenyang,China,110004
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(10)60267-4
  CLC：
- Published：2010
- Accepted：
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BAO Li, ZHANG Ting'an, LIU Yan, DOU Zhihe, L麲uozhi, WANG Xiaomin, MA Jia, JIANG Xiaoli. The Most Probable Mechanism Function and Kinetic Parameters of Gibbsite Dissolution in NaOH[J]. , 2010, 18(4): 630-634.
DOI：

BAO Li, ZHANG Ting'an, LIU Yan, DOU Zhihe, L麲uozhi, WANG Xiaomin, MA Jia, JIANG Xiaoli. The Most Probable Mechanism Function and Kinetic Parameters of Gibbsite Dissolution in NaOH[J]. , 2010, 18(4): 630-634. DOI： 10.1016/S1004-9541(10)60267-4.

摘要

Abstract

Determination of probable mechanism function and kinetic parameters is important to hydrometallurgical kinetics.In this work

the most probable mechanism function and kinetic parameters of gibbsite dissolution in NaOH solution are studied.The sample

the mixture of synthetic gibbsite and sodium hydroxide solution

was scanned in high-pressure differential scanning calorimetry (DSC) equipment with the heating rate of 10 K·min

-1

. Integral equation and differential equation of non-isothermal kinetics were solved to fit the data related to DSC curve.According to the calculation results

the most probable mechanism function for pure synthetic gibbsite dissolution in sodium hydroxide solution is presented based on the optimum procedure in the database of the mechanism function.The apparent activation energy obtained is (75±1) kJ·mol

-1

the frequency factor is 10

8±

;1mol·s

-1

and the reaction is a second order reaction.

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